I strongly disagree. Mythics are currently very easy to get e2p and f2p. Someone with spending on top will have an even easier time.
Mythics used to be something people aspired to get and had an air of prestige. That is substantially lessened now. With how simple everything is, and with how few truly challenging things there are in the game, I am against any more simplifying of something f2p and e2p players can actually get. I’m all for accessibility but there needs to be something remotely challenging (preferably that doesn’t require spending) for people to work towards that not everyone manages
As for the consumables vs keys argument. Keys have one purpose. Mythics. Mythics are tied to seasons. Consumables have multiple uses and, for chests specifically, you can get very different results depending on when you open them. They have no bearing on a specific season.
If a transferable version of a key was introduced. I think it would need to be harder to get. Make people commit to a season for a cheaper cost or go for a more expensive permanent key. Even then I don’t like this idea but it’s better than just flat out keys transferring imho
And last of all, it’s never a once off. The moment it happens once people will expect and demand it forever. We open this door. It’s open. Either it’s something that should be permanent or not at all.